Make New Entry, Make Followup Entry
User name V. Sulkosky
Log entry time 23:45:29 on March 01, 2011
Entry number 349510
Followups:
keyword=CT spectra from this eveningFigure 1 shows the CT spectra from this evening:
Red: run 2131 time window 75 ns; T1 delay 56 ns
Blue: run 2132 time window 140 ns; T1 delay 64 ns
Black: run 2140 time window 140 ns; T1 delay 80 ns
With the changes today, we accidentally walked the timing peak out of the
window. I tried searching for the peak, but because of the mis-cable of
the triggers in ROC 10, I was confused by the spectra. As it turns out,
we did not need to have the first access to increase the window. We
were just on the edge of the falling edge of the opening of the window. Any runs,
before run 2132 were missing the real coincidence peak. I would delay
T1 more, but the retiming on the HRS's is already marginal. I do not
want to completely miss the retiming on the HRS's.
All plots in Figure 1 were made using the left HRS copy of the triggers
in an 1877.
A copy of this log entry has been emailed to: doug,crowder,danez,sparveri
Kinematic 2 CT
